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Reports <b>clone()</b> methods that have a return type different than the class they are contained in.
Often a <b>clone()</b> method will have a return type of <b>java.lang.Object</b>, which makes it harder to use by its clients.
<i>Effective Java, Second Edition</i> recommends for the return type of the <b>clone()</b> method to be
the class type of the object it returns.
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